diff --git a/common/global/default.nix b/common/global/default.nix
index b6511d4..52efc9c 100644
--- a/common/global/default.nix
+++ b/common/global/default.nix
@@ -7,6 +7,7 @@
     ./network.nix
     ./nix.nix
     ./packages.nix
+    ./show-changelog.nix
     ./sudo.nix
     ./tailscale.nix
   ];
diff --git a/common/global/show-changelog.nix b/common/global/show-changelog.nix
new file mode 100644
index 0000000..a0143fa
--- /dev/null
+++ b/common/global/show-changelog.nix
@@ -0,0 +1,10 @@
+{ pkgs, config, lib, ... }:
+
+{
+  system.activationScripts.show-update-changelog = ''
+      if [[ -e /run/current-system ]]; then
+        echo "[show-update-changelog] System Changelog"
+        ${lib.getExe pkgs.nvd} --nix-bin-dir='${config.nix.package}/bin' diff /run/current-system "$systemConfig"
+      fi
+  '';
+}